| Schedule of Available-for-sale Securities Reconciliation [Table Text Block] |
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December 31, 2013
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December 31, 2012
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Amortized
|
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Unrealized
|
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Fair
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Amortized
|
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Unrealized
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Fair
|
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Cost
|
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Gains
|
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Losses
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Value
|
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Cost
|
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Gains
|
|
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Losses
|
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Value
|
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Agency RMBS:
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Agency ARMs
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Freddie Mac
|
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$
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67,121
|
|
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$
|
37
|
|
|
$
|
(2,101
|
)
|
|
$
|
65,057
|
|
|
$
|
80,106
|
|
|
$
|
341
|
|
|
$
|
(83
|
)
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|
$
|
80,364
|
|
|
Fannie Mae
|
|
|
130,487
|
|
|
|
58
|
|
|
|
(3,128
|
)
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|
|
127,417
|
|
|
|
169,020
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|
|
|
659
|
|
|
|
(118
|
)
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169,561
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Ginnie Mae
|
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17,049
|
|
|
|
—
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|
|
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(201
|
)
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16,848
|
|
|
|
24,127
|
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|
|
—
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|
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(129
|
)
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23,998
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Total Agency ARMs
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214,657
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|
95
|
|
|
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(5,430
|
)
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209,322
|
|
|
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273,253
|
|
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|
1,000
|
|
|
|
(330
|
)
|
|
|
273,923
|
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|
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|
|
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Agency Fixed Rate
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Freddie Mac
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43,920
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—
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(1,714
|
)
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|
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42,206
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|
|
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49,899
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|
|
24
|
|
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(162
|
)
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49,761
|
|
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Fannie Mae
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518,598
|
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—
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(24,861
|
)
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493,737
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|
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578,300
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|
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1,166
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|
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(1,283
|
)
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578,183
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Total Agency Fixed Rate
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562,518
|
|
|
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—
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|
|
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(26,575
|
)
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535,943
|
|
|
|
628,199
|
|
|
|
1,190
|
|
|
|
(1,445
|
)
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627,944
|
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|
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|
|
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Agency IOs (1)
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Freddie Mac
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43,468
|
|
|
|
252
|
|
|
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(5,187
|
)
|
|
|
38,533
|
|
|
|
38,025
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|
|
|
92
|
|
|
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(3,217
|
)
|
|
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34,900
|
|
|
Fannie Mae
|
|
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60,813
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|
|
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1,300
|
|
|
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(5,007
|
)
|
|
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57,106
|
|
|
|
40,858
|
|
|
|
656
|
|
|
|
(5.266
|
)
|
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36,248
|
|
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Ginnie Mae
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|
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37,660
|
|
|
|
706
|
|
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|
(2,396
|
)
|
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35,970
|
|
|
|
30,530
|
|
|
|
738
|
|
|
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(3,044
|
)
|
|
|
28,224
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Total Agency IOs
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|
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141,941
|
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2,258
|
|
|
|
(12,590
|
)
|
|
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131,609
|
|
|
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109,413
|
|
|
|
1,486
|
|
|
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(11,527
|
)
|
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|
99,372
|
|
|
|
|
|
|
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|
|
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|
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|
|
|
|
|
|
|
|
|
|
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|
|
|
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Total Agency RMBS
|
|
|
919,116
|
|
|
|
2,353
|
|
|
|
(44,595
|
)
|
|
|
876,874
|
|
|
|
1,010,865
|
|
|
|
3,676
|
|
|
|
(13,302
|
)
|
|
|
1,001,239
|
|
|
Non-Agency RMBS
|
|
|
2,413
|
|
|
|
136
|
|
|
|
(188
|
)
|
|
|
2,361
|
|
|
|
3,291
|
|
|
|
—
|
|
|
|
(604
|
)
|
|
|
2,687
|
|
|
CLOs
|
|
|
18,478
|
|
|
|
14,730
|
|
|
|
—
|
|
|
|
33,208
|
|
|
|
13,495
|
|
|
|
17,290
|
|
|
|
—
|
|
|
|
30,785
|
|
|
Total investment securities available for sale
|
|
$
|
940,007
|
|
|
$
|
17,219
|
|
|
$
|
(44,783
|
)
|
|
$
|
912,443
|
|
|
$
|
1,027,651
|
|
|
$
|
20,966
|
|
|
$
|
(13,906
|
)
|
|
$
|
1,034,711
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
CMBS
|
|
$
|
74,314
|
|
|
$
|
18,264
|
|
|
$
|
—
|
|
|
$
|
92,578
|
|
|
$
|
68,426
|
|
|
$
|
3,006
|
|
|
$
|
(273
|
)
|
|
$
|
71,159
|
|
|
Total investment securities available for sale held in securitization trusts
|
|
$
|
74,314
|
|
|
$
|
18,264
|
|
|
$
|
—
|
|
|
$
|
92,578
|
|
|
$
|
68,426
|
|
|
$
|
3,006
|
|
|
$
|
(273
|
)
|
|
$
|
71,159
|
|
|
| Available-for-sale Securities, Basis for Valuation, Other than Equity Securities |
|
|
|
December 31, 2013
|
|
|
December 31, 2012
|
|
|
|
|
Less than 6 months
|
|
|
6 to 24 months
|
|
|
More than 24 months
|
|
|
Total
|
|
|
Less than 6 months
|
|
|
6 to 24 months
|
|
|
More than 24 months
|
|
|
Total
|
|
|
Agency RMBS
|
|
$
|
97,385
|
|
|
$
|
14,823
|
|
|
$
|
764,666
|
|
|
$
|
876,874
|
|
|
$
|
91,633
|
|
|
$
|
15,559
|
|
|
$
|
894,047
|
|
|
$
|
1,001,239
|
|
|
Non-Agency RMBS
|
|
|
2,361
|
|
|
|
—
|
|
|
|
—
|
|
|
|
2,361
|
|
|
|
2,687
|
|
|
|
—
|
|
|
|
—
|
|
|
|
2,687
|
|
|
CLOs
|
|
|
33,208
|
|
|
|
—
|
|
|
|
—
|
|
|
|
33,208
|
|
|
|
30,785
|
|
|
|
—
|
|
|
|
—
|
|
|
|
30,785
|
|
|
Total investment securities available for sale
|
|
$
|
132,954
|
|
|
$
|
14,823
|
|
|
$
|
764,666
|
|
|
$
|
912,443
|
|
|
$
|
125,105
|
|
|
$
|
15,559
|
|
|
$
|
894,047
|
|
|
$
|
1,034,711
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
CMBS
|
|
$
|
28,232
|
|
|
$
|
—
|
|
|
$
|
64,346
|
|
|
$
|
92,578
|
|
|
$
|
22,215
|
|
|
$
|
—
|
|
|
$
|
48,944
|
|
|
$
|
71,159
|
|
|
Total investment securities available for sale held in securitization trusts
|
|
$
|
28,232
|
|
|
$
|
—
|
|
|
$
|
64,346
|
|
|
$
|
92,578
|
|
|
$
|
22,215
|
|
|
$
|
—
|
|
|
$
|
48,944
|
|
|
$
|
71,159
|
|
|
| Unrealized Gain (Loss) on Investments [Table Text Block] |
|
December 31, 2013
|
|
Less than 12 Months
|
|
|
Greater than 12 months
|
|
|
Total
|
|
|
|
|
Carrying
Value
|
|
|
Gross Unrealized Losses
|
|
|
Carrying
Value
|
|
|
Gross Unrealized Losses
|
|
|
Carrying
Value
|
|
|
Gross Unrealized Losses
|
|
|
Agency RMBS
|
|
$
|
332,519
|
|
|
$
|
(11,423
|
)
|
|
$
|
398,325
|
|
|
$
|
(20,582
|
)
|
|
$
|
730,844
|
|
|
$
|
(32,005
|
)
|
|
Non-Agency RMBS
|
|
|
—
|
|
|
|
—
|
|
|
|
1,104
|
|
|
|
(188
|
)
|
|
|
1,104
|
|
|
|
(188
|
)
|
|
Total investment securities available for sale
|
|
$
|
332,519
|
|
|
$
|
(11,423
|
)
|
|
$
|
399,429
|
|
|
$
|
(20,770
|
)
|
|
$
|
731,948
|
|
|
$
|
(32,193
|
)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
CMBS
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
Total investment securities available for sale held in securitization trusts
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
—
|
|
|
December 31, 2012
|
|
Less than 12 Months
|
|
|
Greater than 12 months
|
|
|
Total
|
|
|
|
|
Carrying
Value
|
|
|
Gross Unrealized Losses
|
|
|
Carrying
Value
|
|
|
Gross Unrealized Losses
|
|
|
Carrying
Value
|
|
|
Gross Unrealized Losses
|
|
|
Agency RMBS
|
|
$
|
513,731
|
|
|
$
|
(1,749
|
)
|
|
$
|
6,158
|
|
|
$
|
(26
|
)
|
|
$
|
519,889
|
|
|
$
|
(1,775
|
)
|
|
Non-Agency RMBS
|
|
|
—
|
|
|
|
—
|
|
|
|
2,687
|
|
|
|
(604
|
)
|
|
|
2,687
|
|
|
|
(604
|
)
|
|
Total investment securities available for sale
|
|
$
|
513,731
|
|
|
$
|
(1,749
|
)
|
|
$
|
8,845
|
|
|
$
|
(630
|
)
|
|
$
|
522,576
|
|
|
$
|
(2,379
|
)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
CMBS
|
|
$
|
16,357
|
|
|
$
|
(273
|
)
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
16,357
|
|
|
$
|
(273
|
)
|
|
Total investment securities available for sale held in securitization trusts
|
|
$
|
16,357
|
|
|
$
|
(273
|
)
|
|
$
|
—
|
|
|
$
|
—
|
|
|
$
|
16,357
|
|
|
$
|
(273
|
)
|
|